Range: Very good, quality: Very good, Practical application: Good to very good, Price: Very good.

I have a total of 4 Minibits systems, minus 1, which I have presented to my son yesterday, so does the 3 upscale class up.
As a benchmark for me the system of Gedore because the mini-bits are so well made that I have written in another review that they like jewelry made of platinum appearance, even under a magnifying glass.
Even the bit screwdriver with its 2-component handle sets standards.
The Heytec Heyco itself must be measured by this system and get the silver medal, bronze goes to the Cordura bag Micro Wolfcraft.mit of 30 bits, 2-component handle and extension with magnetic base.

Reason:
While 6mm bits rd. 15-20 good assortments fight on the market for the favor of the buyer, the air is pretty thin at the 4 mm bits for micro-electronics, precision mechanics, model builders, watchmakers etc..
When the screwdriver there is no reason to complain: athlete, Baco, Bourgeon, Facom, Hazet and many other up and Wera Wiha offer excellent equipment. But 12 to 20 Scraubenzieher take up much space and are uneconomical because quite expensive. On the other hand, will cost the search for the right bit, the degradation and conversion time and bits are easily lost.

A good compromise is the purchase of 2-3 handles and single bits, especially multiple copies of the variables that are needed most for me. This flexible solution provides (yet) Gedore. The quality is superb and prices reasonable, even cheap. You can select folder with everything needed that is not larger than a blood glucose Mßgerät or pocket knife pocket for on the road a little Cordura or nylon.
Therefore, these mini-bits and the handle to get the gold medal.

The Sibermedaille addresses these Heytec box. You can not be beat: Good closure, hinge good, good protective plastic around, easy access to the bits of good labeling ...
On a scale of 1 (poor) to 10 (very good) I would order the Gedore bits and handle 10, the bits of Heytec at 8 and the handle at 7. The use of solid-aluminum, slightly roughened is valuable and very nice, but a 2-component handle is simply more convenient.

Bronze goes to Wolfcraft with Cordura bag Micro, which is so beautiful, so practical and so well made as the pockets of Wera for Cyclops Ratchet or Micro screwdriver the 118er series. The bits have good standard quality (meaning the range craft, not yourself), accommodation and labeling are very good, only the handle is pretty cheap and ergonomically not the best throw. There is also a useful extension with magnetic holder.

CONCLUSION
The box is trendy but good in every respect top class, the handle. I would buy the product at any time and can recommend it with a clear conscience. The price of approx. 38 Euro incl. Postage is absolutely appropriate for so much good.
I invite you to look at my pictures and customers to learn more details that could be useful for making purchasing decisions.